Research output: Contribution to journal › Article › peer-review
| Original language | English |
|---|---|
| Pages (from-to) | 124-129 |
| Number of pages | 6 |
| Journal | Mathematical Notes of the Academy of Sciences of the USSR |
| Volume | 43 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 1988 |
ID: 73500403